Question

Cluster of air sacs in lungs are called____

• A. Bronchi
• B. Alveoli
• C. Bronchioles
• D. Air spaces

Answer 1

The Correct Option is B

To solve the problem, we need to identify the structure in the lungs referred to as a cluster of air sacs.

1. Understanding Lung Anatomy:
- The bronchi are large air passages that lead from the trachea to the lungs.
- The bronchioles are smaller branches of the bronchi that end in clusters of air sacs.
- The alveoli are the tiny air sacs in the lungs where gas exchange (oxygen and carbon dioxide) takes place.
- Air spaces is a general term and not anatomically specific.

2. Correct Term for Cluster of Air Sacs:
The cluster of air sacs at the end of bronchioles are called alveoli.

Final Answer:
The correct term is \({\text{Alveoli}} \).